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A. E. ELMEB. RAILWAY GAR AXLE.

No. 61,180. Patented Jan. 15, 1867,

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ALBERT E. ELMER, OF FIELD, MASSACHUSETTS. Letters No. 61,180, dated Jcnum-y 15, 1867.

msovnn smwn use. AXLE.

TO ALL PERSONS TO WHOM THESE PRESENTS SHALL COME:

Be it known that I, ALBERT E. Emma, of Greenfield, in the county of Franklin, and State of Massachusetts, have invented an Improved Double 110 for Railway Carriages, and I'do hereby declare the some to be fully described in the following specification and represented in the sceempenying drawing, which is a, vertical and longitudinal section of such qxle and its pair of wheels.

' In such drawing, A A represent the wheels and B the'nxle. The suid axle is made in t re parts, a b, one being a solid cylinder and the other tubular for the reception of 'such cylinder. Each part has one journal, 0, jext'ended from it and projecting-from its wheel. Furthermore, esch part, a 6, is constructed withcn abutting head, 0, which is srrsnged' upon it in manner ss represented in the drcwing. These heads restogsinst each other,

one ofltheitfisurfioes or shoulders in contact being formed convex end the other-"concave, sis-shown at d and 2."

These heads endtheir-convex and concave shoulders, as described, ere-for strengthening the axle and for centralizing its ports, rs 6, while they may be in'use. This axle will permit the outside wheel, while'the wheels -msy be running on e curve of ms railway truck, to travel foster than the other so as to accommodate itself to i the longerreil of the curve. In this way the liability oi". twisting and breaking the axle incident to the single tale is overcome, and less power will be required 'to.drive the csrris'ge. on the rsils. I The double axle is au'lvs1u-.

tsgeousin other respects, and particularly in saving finch of the wesr of the rails and wheels to which they are subjected when the single axis is emnloyed. If desirsble, to strengthen the axle,- there iney be c flange atcr extending along the bottom of the tubular port of the exile. 1B] mehingone'o f' theshoulders convex and the other concave, as described and repres nted, the'ccncnvitj sndccuvexity thereof by (ac-operation serve to centralize the pcrtc of the axle, psrticulerly'nftcr tbeirjrubbing' surfaces msy have becomejwcrinesc'ae to increase the dig'meter of the bore of the tubular port, end elsothct of the cylindricelpert. .A small screw, a, may be screwed upon the tubular part of the axle. 0n removsl of the screw oil may be poured into the screwhole seas to lubricate the internal surfaces of 'the axle.

I'sm aware their betas my invention exles have been made in two'psrts, so that one wheel may receive independently ofthe'other, therefore I do not'cleim such. e

What I claim," is v My improved railway carriage axle, made as described, viz, with the concave. and convex shoulders d 9,

arranged and combined with the tubular and cylindrical p srtu a b', and with respect to the wheels, substantially el described.

.- ALBERT E. ELDER. Witnesses:

Gm. L. Frsx, Jr.,' Sm. H. Run. 

